Results 61 to 70 of about 2,118 (215)

Cross‐Validation of Diet Determination Methods for Seabird Conservation

open access: yesEnvironmental DNA, Volume 7, Issue 4, July–August 2025.
This study on the diet of the endangered New Zealand king shag (Leucocarbo carunculatus) compared the frequency of occurrence of fishes detected from the same regurgitated pellets (n = 191) using both hard parts and DNA metabarcoding methodologies.
Aimee L. van der Reis   +4 more
wiley   +1 more source

Length-weight relationships for some important forage crustaceans from South Africa [PDF]

open access: yes, 2000
The diet of marine animals is usually determined by stomach content analysis. Although partially digested prey fragments can often be identified to species level, it is difficult to estimate the original mass of the prey organism.
Gibbons, M.J.   +4 more
core  

A new species of Dermopristis Kearn, Whittington & Evans-Gowing, 2010 (Monogenea: Microbothriidae), with observations on associations between the gut diverticula and reproductive system and on the presence of denticles in the nasal fossae of the host Glaucostegus typus (Bennett) (Elasmobranchii: Rhinobatidae) [PDF]

open access: yes, 2011
Dermopristis cairae n. sp. (Microbothriidae) is described from the skin and possibly from the nasal fossae of the giant shovelnosed ray Glaucostegus typus (Bennett). The new species is distinguished from D.
EM Perkins   +14 more
core   +1 more source

Resegmentation is an ancestral feature of the gnathostome vertebral skeleton [PDF]

open access: yes, 2020
© The Author(s), 2020. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Criswell, K. E., & Gillis, J. A.
Criswell, Katharine E.   +1 more
core   +1 more source

Retention Bans Are Beneficial but Insufficient to Stop Shark Overfishing

open access: yesFish and Fisheries, Volume 26, Issue 3, Page 473-487, May 2025.
ABSTRACT Sharks are among the most threatened groups of exploited fishes, comprising common bycatch across many fisheries. Management efforts intended to safeguard threatened species have increasingly focused on retention bans to reduce bycatch mortality. However, the population effects of such measures remain unevaluated across species.
Leonardo Manir Feitosa   +7 more
wiley   +1 more source

Mitigating the effect of by‐catch on endangered marine life

open access: yesAnimal Conservation, Volume 28, Issue 2, Page 172-184, April 2025.
Fishing gears cause substantial impacts on the oceans and their ecosystems, and many marine animals, such as sea turtles, marine mammals, seabirds and elasmobranchs, end up as by ‐catch. In this paper, the most effective mitigation measures were investigated for each group, taking into account the fishing gear with which they interact most.
M. Villafáfila   +2 more
wiley   +1 more source

Sustainability of elasmobranchs caught as bycatch in a tropical prawn (shrimp) trawl fishery [PDF]

open access: yes, 2002
The bycatch of Australia’s northern prawn fishery (NPF) comprises 56 elasmobranch species (16 families). The impact of this fishery on the sustainability of these species has not been addressed.
Brewer, David T.   +3 more
core  

Additional Records of Deep-Sea Fishes from Off Greater New England [PDF]

open access: yes, 2008
Recent review of deep-sea fishes captured deeper than 200m off greater New England, from the Scotian Shelf at 44°N to the southern New England Shelf at about 38°N, documented 591 species.
Galbraith, John K.   +3 more
core   +3 more sources

Using High‐Resolution Fisheries Data to Identify Spatial Patterns in Retained Catch Compositions for Mixed Fisheries

open access: yesFish and Fisheries, Volume 26, Issue 2, Page 316-330, March 2025.
ABSTRACT Mixed fisheries exploit fish stocks that are heterogeneously distributed in space using gears that are not species selective. This poses a challenge for management as catch limits for less productive stocks constrain catches of more productive stocks leading to losses in yield and economic value. Decoupling catches of stocks caught together in
Gianfranco Anastasi   +3 more
wiley   +1 more source

CELULAS SANGUINEAS DE SCHROEDERICHTHYS CHILENSIS (GUICHENOT 1848) (ELASMOBRANCHII, SCYLIORHINIDAE): LA SERIE BLANCA [PDF]

open access: yesGayana (Concepción), 2003
Ichthyohematology is a common tool in the clinic analysis of economically important fish, and used less to understand fish physiology in relation to the environment. In this context and because of the scarce information about the condrictian hematology, we characterize the leukocytes of the Chilean catshark Schroederichtys chilensis and determine the ...
Valenzuela, Ariel   +2 more
openaire   +2 more sources

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